There is nothing easier, hide it in the Zune! At least that's what the developers of the most original case for iPods think, which they clearly won't love in Redmond.
For happy users of the iPhone (there are such, though I saw it myself) a larger size Zune-case is provided. The truth is not clear how to use such a "device" because it can frighten even its owner. (AAA !!! This is a giant Zune !!! He came to enslave the world!)